Home / 3,079.10-4,249.14-1,681.82

Finding the Fourth Proportional to 3,079.10, 4,249.14 and 1,681.82

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Solution

The fourth proportional to 3,079.10, 4,249.14 and 1,681.82 is: 2,320.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.10 : 4,249.14 = 1,681.82 : x
  2. Step 2: Convert to fraction form
    3,079.10/4,249.14 = 1,681.82/x
  3. Step 3: Cross multiply
    3,079.10x = 4,249.14 × 1,681.82
  4. Step 4: Simplify right side
    3,079.10x = 7,146,288.63
  5. Step 5: Solve for x
    x = 7,146,288.63/3,079.10
  6. Step 6: Final answer
    x = 2,320.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.